# WindThunder ANI_FILE V1.0 Format #
All animations in WindThunder's *Heroine Anthem I&II* are stored in the
proprietary ANI_FILE format. Their extension is usually .APS, .000 or
.001.
## File Format ##
The ANI_FILE format is a running format designed to be streamed
and played in real time. It's a little reminiscent of the ANI-JPEG
format that never really caught on.
The format begins with a similar header to the AMP_FILE format used
for still graphics, but rather than specifying two file sizes, it
specifies a file count. For ‘x' iterations, the game flies through
the images stored in the ANI_FILE. Each image begins with a little
endian long file size.
At the end of the file, after all the images, is a data footer
controlling the image's animation. The format of this footer is
currently unknown.